/**
 * Background Renderer
 *
 * Handles rendering of element backgrounds including:
 * - Background colors
 * - Background images (URL)
 * - Linear gradients
 * - Radial gradients
 * - Background patterns and repeats
 */
import { Context } from '../../core/context';
import { ElementContainer } from '../../dom/element-container';
/**
 * Dependencies required for BackgroundRenderer
 */
export interface BackgroundRendererDependencies {
    ctx: CanvasRenderingContext2D;
    context: Context;
    canvas: HTMLCanvasElement;
    options: {
        width: number;
        height: number;
        scale: number;
    };
}
/**
 * Background Renderer
 *
 * Specialized renderer for element backgrounds.
 * Extracted from CanvasRenderer to improve code organization and maintainability.
 */
export declare class BackgroundRenderer {
    private readonly ctx;
    private readonly context;
    private readonly canvas;
    constructor(deps: BackgroundRendererDependencies);
    /**
     * Render background images for a container
     * Supports URL images, linear gradients, and radial gradients
     *
     * @param container - Element container with background styles
     */
    renderBackgroundImage(container: ElementContainer): Promise<void>;
    /**
     * Render a URL-based background image
     */
    private renderBackgroundURLImage;
    /**
     * Render a linear gradient background
     */
    private renderLinearGradient;
    /**
     * Render a radial gradient background
     */
    private renderRadialGradient;
    /**
     * Render a repeating pattern with offset
     *
     * @param path - Path to fill
     * @param pattern - Canvas pattern or gradient
     * @param offsetX - X offset for pattern
     * @param offsetY - Y offset for pattern
     */
    private renderRepeat;
    /**
     * Resize an image to target dimensions
     *
     * @param image - Source image
     * @param width - Target width
     * @param height - Target height
     * @param imageRendering - CSS image-rendering property value
     * @returns Resized canvas or original image
     */
    private resizeImage;
    /**
     * Create a canvas path from path array
     *
     * @param paths - Array of path points
     */
    private path;
    /**
     * Format path points into canvas path
     *
     * @param paths - Array of path points
     */
    private formatPath;
}